Hugo Gerhard Ströhl: "Heraldischer Atlas". Stuttgart 1899. Tafel 9, "Der Adler".

1. Italian seal of the 14th century

2. crowned eagle, Italian seal of the late 14th century

3. seal of Vienna (1239), File:Vienna seal oldest.jpg

4. seal of Henrich von Mödling (1203), File:Jindrich starsi Modling.jpg

5. knightly shield of the 14th century from Valère Basilica, Sion, Valais

6. Silesian eagle with crescent, Conrad Grünenberg (1483)

7. imperial eagle by Hans Burgkmair (1505), File:Burgkmair Reichsadler 1505.jpg

8. Jost Ammann (1589)

9. arms of Deggendorf, Bavaria, from an infantry shield of the late 15th century

10. Bohemian eagle, tomb of Ottokar I, Prague (14th century)

11. eagle with crescent and great helm, counterseal of Bolco II, Duke of Silesia (1334)

12. arms of Johannes Stabius by Albrecht Dürer (1515), File:Stabius wappen.jpg